题目

 As soon as the manager entered his office, he began to ______ the telephone book on his desk.   A. look up                   B. look into          C. look upon             D. look through 答案：D某商店里一架玩具飞机要38元，小明有优惠卡，可以打八五折。用优惠卡购买这架飞机，需要多少元？